valor vs valorousness

valor and valorousness both are nouns.

Word	Noun	Adjective	Verb	Adverb
valor	Yes	No	No	No
valorousness	Yes	No	No	No

As nouns, valor and valorousness are synonyms defined as:

valor and valorousness: the qualities of a hero or heroine; exceptional or heroic courage when facing danger (especially in battle)

Other synonyms of valor include gallantry, heroism, valiance, valiancy, valour.

valor (noun)	valorousness (noun)
the qualities of a hero or heroine; exceptional or heroic courage when facing danger (especially in battle)	the qualities of a hero or heroine; exceptional or heroic courage when facing danger (especially in battle)